Copycat Outback Steakhouse Bloomin’ Onion Dip (Aussie Home Version)

There’s a reason the Bloomin’ Onion is the most talked-about starter on the Outback Steakhouse menu in Australia: a whole onion, cut into petals, fried golden and served with that spicy, creamy bloom sauce, is pure theatre on a plate. But deep-frying a whole bloomed onion at home is a mission — hot oil everywhere, fiddly batter, and enough calories to sink the week. This copycat bloomin onion dip australia home version keeps the theatre and ditches the deep fryer: crispy baked onion petals you pull apart and dunk into a spicy homemade bloom sauce, built for sharing at a fraction of the restaurant price.

The honest bit up front: this is a homemade inspired-by recreation and is not affiliated with or endorsed by Outback Steakhouse. It doesn’t claim to reveal any proprietary recipe — it’s my own take on the flavours, using a baked method and everyday supermarket ingredients so you can make it in a normal home kitchen without a commercial fryer.

Why a Copycat Bloomin Onion Dip Australia Can Actually Make Beats the Original

Let’s be real about the restaurant version: it’s delicious, but it’s a deep-fried whole onion designed to be split between four people, and the price reflects the labour. The home version of this copycat bloomin onion dip australia recipe takes a different path to the same flavour destination. Instead of battering and frying a whole onion, you cut large brown onions into thick petals, coat them in a seasoned crumb, and bake them until deeply golden and crisp at the edges. You get the same pull-apart fun, the same sweet-onion-meets-spicy-dip contrast, and a result you can actually make on a weeknight.

The baked method has a second advantage nobody talks about: control. In the fryer version, the outer petals can go dark before the centre cooks through. In the oven, spread on a tray with space between them, every petal crisps evenly. A light spray of oil and a hot oven do the browning work, and the seasoned coating — flour, smoked paprika, garlic powder, a pinch of cayenne — delivers the savoury punch the battered original gets from the fryer.

Then there’s the sauce. The bloom sauce is the soul of the dish: creamy, tangy, with a slow-building warmth from horseradish and cayenne. The homemade version below nails that profile with ingredients from any Coles, Woolworths or Aldi. Make a double batch — people always want more sauce than you think.

The Onion Petals: How to Cut and Coat Them

Start with two large brown onions — the sweeter, the better, so look for firm, heavy ones. Peel them and cut each into 8 thick wedges through the root end, keeping the root intact so each wedge holds together as a petal. Then gently separate the layers of each wedge into 2 or 3 petals. You want pieces thick enough to stay sturdy when dunked but thin enough to crisp — roughly the thickness of a chunky chip.

Set up a simple three-stage coating line: seasoned flour, beaten egg, then seasoned breadcrumbs. For the flour, mix one cup of plain flour with a teaspoon each of smoked paprika, garlic powder and onion powder, half a teaspoon of dried oregano, half a teaspoon of cayenne (dial it back if you’re spice-shy), and a good pinch of salt and cracked pepper. The crumb gets the same spice treatment minus the flour — a cup and a half of panko or regular breadcrumbs tossed with another teaspoon of paprika and a pinch of salt. Panko gives the crunchiest result, but standard breadcrumbs work fine and cost less.

Dredge each petal in flour, shake off the excess, dip in beaten egg, then press firmly into the crumbs so the coating really adheres. Lay them on a lined baking tray with space between each piece — crowding is the enemy of crispness. A light, even spray of olive oil over the top helps the crumbs turn golden rather than pale. Bake at 220°C (200°C fan) for 25 to 30 minutes, turning once, until deeply golden and crisp at the edges. The natural sugars in the onion caramelise in the heat, which is where that sweet-savoury contrast comes from.

Ingredient Cost Table (Makes 6–8 Serves)

Spicy Bloom Sauce: The 5-Minute Whisk

This is an inspired-by approximation of the restaurant’s famous dipping sauce, not the actual formula — but it hits the same notes: creamy base, tangy edge, gentle heat that builds. Whisk together half a cup of whole-egg mayonnaise, a quarter cup of sour cream, two tablespoons of tomato sauce, one tablespoon of prepared horseradish (the bottled kind from the condiment aisle), a teaspoon of smoked paprika, half a teaspoon of garlic powder, a quarter teaspoon of cayenne, a teaspoon of lemon juice and a pinch of salt. Taste and adjust the heat — more cayenne or a second spoon of horseradish if you like it fiery.

The sauce improves after 30 minutes in the fridge, so make it before you start coating the onions. It keeps for up to 5 days sealed in the fridge, which makes it a handy all-rounder: it’s brilliant on burgers, as a dip for wedges, or thinned with a little milk as a salad dressing. If you want a lighter version, swap the mayo for half Greek yoghurt — the tang suits the sauce, though you’ll lose a little of the richness.

Assembling the Share Plate

Presentation is half the fun with this dish. Pile the hot onion petals in a rough blooming-flower arrangement on a large board or platter, place a ramekin of the spicy bloom sauce in the centre, and scatter over some chopped chives or spring onion greens if you’re feeling fancy. Serve immediately while the petals are at their crispiest — the contrast between the hot, crunchy onion and the cool, spicy sauce is the whole point.

For a footy-night spread, this copycat bloomin onion dip australia platter sits happily alongside air-fryer wedges, a bowl of coleslaw and whatever’s on the barbie. It also works as a side for homemade burgers — the petals and sauce do the job of both chips and condiment. If you’re feeding a crowd, the recipe doubles easily across two trays; just rotate the trays halfway through baking so both crisp evenly.

Cost Breakdown: Homemade vs Restaurant Starter

The maths is stark: a homemade batch feeds twice as many people for less than half the price of one restaurant order. Even factoring in the electricity for the oven, you’re miles ahead — and there’s no waiting for a table.

Make-Ahead, Storage and Reheating Tips

Let’s be honest: onion petals are at their absolute best within 20 minutes of leaving the oven. That said, life happens, and leftovers reheat surprisingly well. Cool any uneaten petals completely, store them in a single layer in a sealed container in the fridge for up to 2 days, and re-crisp in the air fryer at 200°C for 4 to 5 minutes. The microwave will make them soggy — avoid it.

You can also do the fiddly coating work ahead of time: coat the petals, lay them on a lined tray, cover and refrigerate for up to 8 hours, then bake straight from the fridge (add 3 to 4 minutes to the baking time). The sauce can be made up to 5 days ahead. Between the two, you can have this share plate on the table 35 minutes after guests arrive, with most of the work already done.

Food safety basics apply as with any egg-coated food: don’t leave the coated raw petals at room temperature for more than an hour or two, refrigerate leftovers within two hours of cooking, and reheat until steaming hot.

Variations Worth Trying

Cheesy loaded petals

In the last 5 minutes of baking, scatter a cup of grated tasty cheese over the petals and return to the oven until melted and bubbling. Finish with a dollop of sour cream and chopped spring onions. It’s no longer a copycat of anything — it’s just good.

Ranch-style dip swap

Not a horseradish fan? Swap the bloom sauce for a homemade ranch: Greek yoghurt, a squeeze of lemon, garlic powder, dried dill and chives. The cool herbal dip against the spiced petals is a top combo.

Gluten-free petals

Use a gluten-free plain flour blend for the dredge and gluten-free panko or crushed cornflakes for the crumb. Check your spice blends and horseradish for hidden gluten, and the rest of the recipe is naturally gluten-free.

Approximate Nutrition Per Serve (1/8 of Batch)

These are rough estimates for the baked version with sauce, not precise dietary advice — exact values depend on your crumb, oil spray and portion of sauce: